package com.bauer.base.interview.base;

import java.util.Arrays;
import java.util.Scanner;

/**
 * @Author ：rui.wei
 * @Date ：Created in 17:25 2019/7/8
 * @Description：
 */
public class IntMain {

    public static final String AOP = "AOP";

    private static int order;

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String[] ss = sc.nextLine().split(" ");
        char[] symbols = new char[]{'+','-','*','/'};
        int[] flags = new int[4];
        for (int i = 0; i < 4; i++) {
            for (int j = 0; j < 4; j++) {
                if (j == i) {
                    continue;
                }
                for (int k = 0; k < 4; k++) {
                    if (k == j || k == i) {
                        continue;
                    }
                    for (int l = 0; l < 4; l++) {
                        if (l == k || l == j || l == i) {
                            continue;
                        }

                    }
                }
            }
        }

    }


    public void cal(int a ,int b,int c,int d){
    }
}